[JBlixt]

Be carefull with them writing articles. I tried this before. The article had to low quality and also you might end up with the worst since you drive traffic to them and might harm your own SEO-status. If the articles are about you niche you will give them quality links and all you get are a little more text on your page.

I do not say do not do it. But think before you help them up in the search engines. If you are going to do it be picky about the articles and use them as suplemenatary to your normal site.